Paint-mixing machine



July 6, 1943- A. P. JORGENSON PAINT MIXING MACHINE Filed Aug. 28, 1940 v 3 Sheets-Sheet l INVENTOR y 1943- A. P. JORGENSON I 2,323,403

PAINT MIXING MACHINE Filed Aug. 28, 1940 3 Sheets-FSheet 2 INVENTOR y 1943' A. P. JORGENSON 2,323,403

PAINT MIXING MACHINE Filed Aug. 28, 1940 3 Sheets-Sheet 3,

Patented July 6, 1943 UNITED STATES..-

PAINT-MIXING MACHINE.

Application August 28, 1940, Serial No. 354,492

2 Claims.

My invention relates to improvements in paintmixing machines.

One of the objects of my invention is to provide an improved paint-mixing machine of the general type as disclosed in my Patent No. 2,109,- 233, issued February 22, 1938, but which is capable of efficiently handling substantially greater loads, such as -gallon cans of paint.

Other objects and advantages will hereinafter appear.

For the purpose of illustrating my invention, an embodiment thereof is shown in the drawings, wherein Figure 1 is a side, elevational view, partly in section, of a paint-mixing machine constructed and operating in accordance with my invention, the section being taken partly on the line i! in Fig. 2;

Fig. 2 is a sectional, elevational view, the section being taken partly on the line 22 in Fig. 1;

Fig. 3 is a section taken on the line 3-3 in Fig. 1;

Fig. 4 is an enlarged, detail, fragmentary view in elevation and looking toward the left in Fig. 1; and

Fig. 5 is a section taken on the line 5-5 in Fig. 1.

In the disclosed embodiment of my invention, a drive shaft in the form of a crankshaft Ill, provided at one end thereof with a crank or eccentric portion H, is supported, as shown, for rotation about its longitudinal axis l2 which is horizontally disposed.

The axis I3 of the crank or eccentric portion l I is disposed at an acute angle of approximately degrees to the axis 12 of the crankshaft, and intersects the axis 12 at a point l4 in close proximity to the crank portion l I.

The crankshaft H3 is driven from a countershaft I5 swung from a rod or hinge pin Hi, the connection being by means of belting l1 around a pulley l8 fixed on the countershaft I5 and a pulley l9 fixed on the crankshaft. A pulley fixed on the countershaft is driven by an electric motor 2| through a belt 22. Tension of the drive belt 22 may be varied by adjusting the bolt 23 which has a screw-thread engagement with a pivot block 24 rotatabli supported in spaced lugs 25 with which the housing 26 of the countershaft is provided. In Fig. 1, the countershaft I5 is shown in normal operating position, but for clarity of illustration, is shown in Fig. 2 as being vertically below the supporting hinge pin IS.

A driven shaft in the form of a connecting rod 21, is supported as shown in Fig. l, with its lon- ATENT OFFICE gitudinal axis 28 perpendicular to and intersecting the axis of the crank or eccentric portion H. The respective axes l2 and I3 of the drive shaft Hi and the crank portion H, which intersect at the point l4, define the vertical plane AA. The driven shaft or connecting rod 2-! is disposed with its longitudinal axis 28 at the acute angle B to the vertical plane AA.

Connection between the driven shaft 21 and the crank portion H is made through a universal joint which comprises the fork 28A fixed on the adjacent end of the shaft 21, the diametricallyopposite bearing screws 29 carried bythe fork, and the universal bearing ring 36 disposed on the eccentric portion II and rotatable with respect thereto. The adjacent, conical ends of the bearing screws 29 seat into the bearing ring 30, as shown, and are rotatable with respect thereto. A thrust plate Ha is fixed with respect to the eccentric portion H.

The other end of the driven shaft 2! is supported by and slideable in a front bearing 3| which has a universal, swivel action in the complementary bearing sockets 32 and 33.

The can holder comprises the jaw 34 supported by and fixed to the lower ends of the vertical rods 35, the complementary jaw 36 which is slideable on these rods, and the U-shape bracket 31 to which the rods 35 are fixed by rivets 38. A crossbar 39 is fixed by pins 40 to the upper ends of the rods 35. The movable jaw 36 has a rotatable connection with the lower end of a clampscrew 4| which is threaded through the crossbar 39 and is provided at its upper end with a handle 42. Clockwise rotation of the clampscrew 4| causes downward movement of the jaw 36 to grip the can of paint, and opposite rotation of the clampscrew releases the can.

The can holder is adjustably carried by a vise fixed on the front end of the driven shaft 21, and designated generally by the reference numeral 43. Th vise 43 comprises the hub part 44 fixed on shaft 21 and the jaw part 45 which is movable with respect to the hub part. The bracket 31 of the can holder is provided with the flange 46 which is rotatable on the hub part 44, and which is gripped between the vise parts 44 and 45 to hold the can holder rigidly With respect to the shaft 21. A locknut 41, inserted into the jaw part 45 and having a square or hexagonal head to prevent relative rotation, receives the threaded end of the lockscrew 48 which is rotated by the handle 49.

In the operation of my improved paint-mixing machine, the drive shaft 10 rotates continuously at a relatively high, uniform rate. On account of the eccentric or crank portion H and the disposition or relation of the axes l2, l3 and 28 with respect to each other, the driven shaft 21 is given a composite or resultant movement made up of three distinct, component movements. One of these component movements, represented at 50, is a rapid oscillatory movement in a vertical plane, about the front bearing 3| as a center. This results in a rapid raising and lowering, represented at 50a, of the can holder and paint can gripped between the jaws 34 and 36.

Another of the component movements, represented at 5!, is a rapid straight-line, reciprocatory movement of the shaft 21 in the direction of its longitudinal axis 28. As represented at 5Ia, this results in a rapid, back-and-forth or straightline reciprocatory movement of the can and holder therefor.

Another of the component movements, represented at 52, is a rapid rocking movement of the shaft 21 about its axis 28. As represented at 52a, this results in a corresponding, rapid, rocking movement of the can and holder about a horizontal axis.

The resultant movement of the can and holder, made up of the thre distinct, component movements 50a, 5m and 52a, causes terrific, constant agitation at high speed at every possible tangent and angle, literally tears pigments apart, disintegrates any sediment on walls of the can and thoroughly mixes them with the vehicle.

By swinging over the handle 49 to turn the lockscrew 49 and release flange 46, the holder can be rotated bodily about the horizontal axis to set the paint can in a position right side up, or in a position upside down, or in the intermediate, side-way position. The handle 49 is then swung back to tighten up on the lockscrew 48 whereby the can and holder are held rigidly in the desired position. After a few minutes of conditioning in each of the three positions, the paint becomes factory fresh, full of life, and is in perfect consistency throughout. The can is then released by turning the handle 42 to raise jaw 36. For the purpose of facilitating removal of the can, a foot lever 53, pivotally mounted on the lower jaw 34, may be depressed to engage and tilt the can slightly so that at this place it is above the flange 54.

While but one embodiment of my invention has been disclosed, it will be understood that various modifications thereof are possible without departing from the spirit of my invention or the scope of the claims.

I claim as my invention:

1. In a paint-mixing machine, agitating means comprising a drive shaft having an eccentric crank portion whose axis is disposed at an acute angle to the axis of said shaft, a driven shaft,

universal means connecting said driven shaft to said eccentric crank portion, a swivel bearing supporting the other end of said driven shaft, said driven shaft being slideable and rotatable in said bearing.

2. In a paint-mixing machine, means for holding a can of paint, means supporting said canholding means for simultaneous reciprocatory movements about axes substantially perpendicular to each other and for a simultaneous rocking movement substantially about one of said axes, and means for driving said can-holding means.

ARTHUR P. J-ORGENSON. 

